Placing so much conditions on that EU idea would make it too rare to bother coding, though. Greece or Netherlands-without-colonies would be too weak anyway, so it does look like Germany would receive the only significant benefit from the idea. The OP was definitely more ambitious then that, positing that it should almost always happen. And it's not like Greece being in the EU made her economy stronger... I am actually not really a fan of the whole Congress system in RFC, anyway. I don't think that it should be removed, but if it didn't exist, it would be no big of a loss. The only significant benefit Vanilla RFC congresses had is occasional simulation of Euro colonialism, but today we have Trade Companies for that.